From 6e35d009420739e2acd29c5f77fa55dd1ef758c4 Mon Sep 17 00:00:00 2001
From: Cacodemon345 <wahil1976@outlook.com>
Date: Tue, 13 Feb 2024 01:49:43 +0600
Subject: [PATCH] Gamma correction support

---
 src/video/vid_c&t_69000.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/video/vid_c&t_69000.c b/src/video/vid_c&t_69000.c
index 973502f55..6f41ba2df 100644
--- a/src/video/vid_c&t_69000.c
+++ b/src/video/vid_c&t_69000.c
@@ -752,6 +752,9 @@ chips_69000_recalctimings(svga_t *svga)
         }
 
         switch (chips->ext_regs[0x81] & 0xF) {
+            default:
+                svga->bpp = 8;
+                break;
             case 0b0010:
                 svga->bpp = 8;
                 svga->render = svga_render_8bpp_highres;
@@ -1479,6 +1482,10 @@ chips_69000_write_ext_reg(chips_69000_t* chips, uint8_t val)
             chips->ext_regs[chips->ext_index] = val & 0x1f;
             svga_recalctimings(&chips->svga);
             break;
+        case 0x82:
+            chips->ext_regs[chips->ext_index] = val & 0xf;
+            chips->svga.lut_map = !!(val & 0x8);
+            break;
         case 0xA0:
             chips->ext_regs[chips->ext_index] = val;
             chips->svga.hwcursor.ena = ((val & 7) == 0b101) || ((val & 7) == 0b1);